Abstract: Abstract：The Sankuanggou Cu-Fe-Mo-Cu ore deposit is located in the northwest part of the famous Doubaoshan copper polymetallic metallogenic belt, Heilongjiang Province. In recent years, the resource exploration in crisis mines has been carried out at the edge and on the periphery of this ore deposit, and has discovered an independent Mo ore body and a Cu-Mo ore body of the cryptoexplosion breccia type as well as a gold mineralization belt related to the ductile-brittle shear zone. Therefore, some new understanding of the geological characteristics and mineralization regularity of this ore deposit has been obtained. This paper also summarized and analyzed hydrogeochemical indicators for ore-prospecting in this area, thus providing a more adequate basis for further exploration of medium-size or large-size copper polymetallic deposits.